WO2002069647A1 - Ecran a plasma stereoscopique a entrelacement de champs - Google Patents

Ecran a plasma stereoscopique a entrelacement de champs Download PDF

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Publication number
WO2002069647A1
WO2002069647A1 PCT/EP2002/001429 EP0201429W WO02069647A1 WO 2002069647 A1 WO2002069647 A1 WO 2002069647A1 EP 0201429 W EP0201429 W EP 0201429W WO 02069647 A1 WO02069647 A1 WO 02069647A1
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Prior art keywords
sub
field
fields
video
picture
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PCT/EP2002/001429
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English (en)
Inventor
Sébastien Weitbruch
Carlos Correa
Didier Doyen
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Thomson Licensing S.A.
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Publication date
Priority claimed from EP01104234A external-priority patent/EP1231797A1/fr
Application filed by Thomson Licensing S.A. filed Critical Thomson Licensing S.A.
Priority to US10/468,875 priority Critical patent/US20040070556A1/en
Publication of WO2002069647A1 publication Critical patent/WO2002069647A1/fr

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
    • G09G3/2022—Display of intermediate tones by time modulation using two or more time intervals using sub-frames
    • G09G3/2029—Display of intermediate tones by time modulation using two or more time intervals using sub-frames the sub-frames having non-binary weights
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
    • H04N13/106—Processing image signals
    • H04N13/139—Format conversion, e.g. of frame-rate or size
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
    • H04N13/106—Processing image signals
    • H04N13/161—Encoding, multiplexing or demultiplexing different image signal components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
    • H04N13/106—Processing image signals
    • H04N13/167—Synchronising or controlling image signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/341—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using temporal multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/356—Image reproducers having separate monoscopic and stereoscopic modes
    • H04N13/359—Switching between monoscopic and stereoscopic modes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/398—Synchronisation thereof; Control thereof
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0202—Addressing of scan or signal lines
    • G09G2310/0205—Simultaneous scanning of several lines in flat panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0261—Improving the quality of display appearance in the context of movement of objects on the screen or movement of the observer relative to the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
    • H04N13/194—Transmission of image signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/204—Image signal generators using stereoscopic image cameras
    • H04N13/239—Image signal generators using stereoscopic image cameras using two 2D image sensors having a relative position equal to or related to the interocular distance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/286—Image signal generators having separate monoscopic and stereoscopic modes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/334—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using spectral multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/361—Reproducing mixed stereoscopic images; Reproducing mixed monoscopic and stereoscopic images, e.g. a stereoscopic image overlay window on a monoscopic image background
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/597—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding specially adapted for multi-view video sequence encoding

Definitions

  • the present: invention relates to a method and device for processing video pictures for stereoscopic displaying on a display device.
  • the invention deals with the improvement of stereoscopic picture quality.
  • the quality of stereoscopic pictures displayed on plasma display panels (PDP) shall be improved.
  • Plasma technology allows achieving flat displays with large size, very limited depth and without relevant viewing angle constraints. For these reasons, the PDPs are really suitable for use in stereoscopic vision. This display causes no geo- metric distortion in the displayed image and therefore enables a precise depth expression of stereoscopic images. In addition, the big size of such a display suits very well to a strong impression of volume.
  • the 3D perception from the Human Visual System is based on the close side-by-side position of the eyes. Each eye takes a view of the same area from a slightly different angle. These two separate images are sent to the brain for processing. When the two images arrive simultaneously in the visual centre of the brain, they are united into one picture as shown in Fig. 1. The mind combines the two images by matching up the similarities and adding the small differences to catch finally a three-dimensional stereo picture. With stereovision, the HVS sees an object as solid in three spatial dimensions (width, height and depth) and it is the added perception of the depth dimension that makes stereovision so rich and special. Moreover, a stereo picture will increase the impression of sharpness in the brain.
  • 3D images are generated with the help of two video cameras positioned side-by-side in a similar way than the human eyes.
  • Other methods mainly based on complex software are also able to generate artificial stereo pictures by ray tracing (simulation of light propagation) .
  • These images shall be called left and right images .
  • the principle of stereoscopic broadcasting is based on the transmission of both images. This global concept is shown in Fig. 2. If right and left images are displayed sequentially from a source, and a synchronized shutter system in front of the eye allows the right image to only enter the right eye and conversely, then the stereovision can be observed as shown in Fig. 3.
  • the shutter can be mounted in glasses, which are matched with a display in which two constituent pictures are presented in alternation instead of simultaneously. The glasses occlude one eye and then the other in synchronism with the image displaying. This method is often called
  • the electro-optical polarizing shutter available on the market today transmits only 30 % of the unpolarized input light (rather than 50 % for perfect polarizers) and this reduces a lot the image brightness. A better solution could be available in the future.
  • Some of the eyeglass shutter systems known today are connected by wires to the monitor, others are controlled by infrared and are wireless.
  • the displaying of stereo pictures on a Plasma screen needs also the possibility to display two different pictures per frame, which is a new challenge for this technology.
  • a PDP utilizes a matrix array of discharge cells, which can only be “ON” or “OFF”. Also unlike a CRT or LCD in which grey levels are expressed by analog control of the light emission, a PDP controls the grey level by modulating the number of light pulses per frame (sustain pulses) . The eye will integrate this time-modulation over a period corresponding to the eye time response. To perform a greyscale rendition, the plasma display is commonly divided in sub- lighting periods called sub- ields each one being separately controllable by a bit entry in a sub-field code word. Let us assume, we want to dispose of 8 bit luminance levels, in that case each level will be represented by a combination of the 8 following bits:
  • the frame period will be divided in 8 lighting periods (called sub- fields) , each one corresponding to a bit.
  • the number of light pulses for the bit "2" is the double as for the bit "1", and so forth.
  • a simple method to implement a stereoscopic displaying is based on the separation of sub-fields into Left (L) and Right (R) groups which are synchronized with the open and close of the LCD shutter glasses. It is a further advantage of this method that with the same display 2D and 3D pictures can easily be generated by a simple change of the sub-field encoding process.
  • the PDP is able to display 12 sub-fields per frame in 60Hz mode (16.67 ms) .
  • the assumption is made that the temporal response of the shutter eyeglasses is in the size of the time needed for one sub-field.
  • Fig. 4 shows a light emission scheme, which has twelve sub- fields per frame in 60Hz mode (16.7 ms) . Six sub-fields are assigned to each of the left and right images and, the temporal response of the shutter-eyeglasses makes the first sub-field of each R and L images unusable for grey-scale rendition.
  • the grey-scale rendition will be limited to 32 grey-levels because only five sub-fields can be used for each of the L and R pictures. This limitation is unacceptable for a consumer product since it will lead to a strong degradation of the picture quality.
  • such a sub-fields encoding is a pure linear binary code, which has a very bad behaviour in terms of false contour effect and panel response fidelity.
  • the object of the present invention improve picture quality, especially the time parallax problem shall be reduced and to insure a good grey-scale portrayal as well as a good false contour behaviour of plasma display panels for stereoscopic displaying.
  • the grouping of sub-fields in two left and right sub-field groups and the displaying of the sub-field groups in interleaved or interlaced manner improves very much the time parallax problem. It also provides a bonus effect in regard to the large area flickering problematic, which is likewise reduced .
  • the grey-scale portrayal improvement and false contour ef- feet reduction comes merely from the measures specified in the dependent claims.
  • the so-called bit-line-repeat sub- field encoding technique where for corresponding pixels of two or more pixel lines sub-field code words are determined, which have identical entries for a number of sub-fields called common sub-fields serves for a artificial increase of a number of sub-fields.
  • the addressing time of the panel may be decreased so that a better sub-field coding for both grey-scale portrayal and false contour behaviour may be obtained.
  • Addressing time can also be saved, when before sub-field encoding the input left and right pictures are down converted/decimated. E.g. every second line can be taken for displaying and on the display this line is repeated twice. Of course, this measure is accompanied by a greater reduction of vertical resolution. Drawings
  • Fig. 1 shows the principle of stereoscopic vision
  • Fig. 2 shows the principle of stereoscopic broadcasting
  • Fig. 3 shows the principle of stereoscopic displaying
  • Fig. 4 shows the principle of stereoscopic displaying on a plasma display panel
  • Fig. 5 shows the principle of line-repetition on a plasma display panel
  • Fig. 6 shows the increase of sub-fields number by line- repetition
  • Fig. 7a shows the bit-line-repeat concept according to the present invention
  • Fig. 7b shows an example for bit-line-repeat encoding
  • Fig. 8 shows the principle of deriving sub-fields groups from a sub-field organisation with 9 sub-fields
  • Fig. 9 shows the principle of interlacing sub-field groups for stereoscopic displaying on a plasma display panel
  • Fig. 10 shows the line-repeat method combined with interlacing sub-field groups for stereoscopic displaying on a plasma display panel
  • Fig. 11 shows a circuit implementation of a plasma display panel for stereoscopic displaying.
  • n SF represents the number of sub-fields
  • NL the number of lines
  • T ad the duration to address one pixel line per sub-field
  • T L i ght the lighting duration of the panel
  • T Frame the frame period.
  • the best possibility to increase the sub-field number is to reduce the time needed to address the plasma display panel. Since the time needed to address one line of the panel is strongly specified by the panel response fidelity itself, a simple way to reduce the complete addressing time is to reduce the number of addressed lines per sub-field.
  • a first idea is to reduce, for all sub-fields, the number of lines to be addressed by grouping two consecutive lines together. In that case the previous relation is modified to the following one:
  • the schematic below represents the increase of sub-fields by using a line-repetition principle: about 10 sub-fields are available per L and R pictures for the same frame duration.
  • the addressing time for each sub-field is reduced to the half of the standard addressing time.
  • This equation is comparable to the equation (1) but a time T er has been added corresponding to the time needed to erase each sub-field. In that case, if the number of sub-fields shall be increased by two, the number of addressed lines has to be still divided by two (line-repeat) and in addition, the addressing time itself has to be reduced a bit to have enough time to perform twice more erasing. This is only possible trough an increasing of the response fidelity of the panel (optimal encoding method) .
  • this line-repetition method gives the possibility to increase the grey-scale portrayal in case of stereoscopic plasma display panels as well as the false con- tour behaviour of the panel.
  • a method for processing video pictures or stereoscopic displaying on a display device by processing at least one interlaced picture includ- ing a left picture and a right picture, wherein each line of the left picture and right picture are multiply displayed for obtaining a left picture and a right picture display, so that the addressing time for addressing pixels of the display device is reduced.
  • sub-fields only will be duplicated on n consecutive lines to reduce globally the addressing time of the panel. These sub-fields are called common sub-fields since they are common to different lines in the vertical direction. The other sub-fields will be called specific sub- fields since they will be specific to each pixel.
  • the video signal will be specially encoded to reduce the loss of vertical resolution.
  • n C ⁇ mmonSF represents the number of common sub-fields and k the number of consecutive lines having the same sub-fields in common.
  • Fig. 7a illustrates this concept. The six pixels located at the same horizontal posi- tion but on six consecutive lines will be encoded with the same common sub-fields but their specifity will be encoded with the specific sub-fields.
  • the underlined values represent the common values.
  • This code has the time cost of 5 standard sub-fields (4 specific with normal addressing time + 6 common with a sixth of the addressing time) but improves the grey-scale rendition and the false contour behaviour of the panel.
  • the stereoscopic displaying will rein- force the impression of large area flickering. This effect is already strongly visible in the case of 50Hz frame repetition due to the human eye behaviour.
  • the large screen size of the plasma display will further increase this effect. For these reasons, it is important to develop a specific mode for 50Hz-stereoscopic plasma displays .
  • EP-A-0 982 708 A first concept of specific plasma encoding method (EUTV coding) for solving large area flickering in case of 50Hz frame repetition has already been proposed in EP-A-0 982 708 which is another patent application of the applicant.
  • the principle is based on the fact that, in 50Hz it is possible to display more sub-fields since the frame duration has been increased from 16.67 (60Hz) to 20ms (50Hz) .
  • the main idea be- hind this proposition is the generation of an artificial
  • 100Hz component inside this 20ms by grouping the sub-fields in two groups, of similar structure, and displaying the groups in a 10ms raster (fitting with a 100Hz raster) .
  • These two sub-field groups are identical in terms of the most sig- nificant sub-fields and different in terms of the least significant sub-fields.
  • a specific coding process that distributes luminance weight symmetrically to the two groups will minimise the 50Hz large area flicker luminance component.
  • Fig. 8 it is illustrated how the sub-field groups can be derived from a 9 SF sub-field organisation. Some of the sub-fields in the sub-field organisation are split in two parts with equal weights .
  • a solution will be to mix the (L) and (R) pictures together.
  • it will lead to the mixing of LI, Rl, L2 , R2 as presented on Fig. 9, which shows the interleaving of the two sub-components for each Right and Left pictures. This will lead to a reduction of the time-parallax artefact.
  • a method for processing video pictures for stereoscopic display on a display de- vice having a plurality of luminous elements, one or more of them corresponding to each of the pixels of the video picture, wherein the time duration of a video frame or a video field corresponding to each video picture is divided into a plurality of sub-fields during which the luminous elements can be activated for light emission in small pulses corresponding to a sub-field code word which is used for brightness control, wherein the video frame includes a left and a right field for stereoscopic displaying, and wherein the sub-fields of the left field are grouped into at least two left sub-field groups (LI, L2) and those of the right field are grouped into at least two right sub-field groups (Rl, R2) and the left and right sub-field groups (LI, L2 , Rl, R2) of the video frame are arranged in an interlaced manner.
  • LI, L2 left sub-field groups
  • Rl, R2 right sub-field groups
  • the plasma display enabling 12 sub-fields per 60Hz frame will be able to display 14 sub-fields in 50Hz mode. Furthermore, in the previous examples, the shutter eyeglasses had a temporal response of about one sub-field. Considering above described stereoscopic EUTV coding (Fig. 9), there is a need of 4 switches of the glasses. In that case, about 10 sub- fields will be available for the coding of the stereoscopic EUTV coding. This is not enough. Therefore, the same line- repetition technique will be implemented in order to dispose of twice more sub-fields.
  • Figure 10 illustrates the implementation of such a stereoscopic EUTV coding based on the following weighting:
  • the most significant sub-fields (16, 24, and 32 are the same in the two groups.
  • the groups differ in the least significant sub-fields (1, 2, 4, and 8) .
  • the upper schematic, presented in Fig. 10, represents the standard field separation principle applied in the example of 14 sub-fields available at 50Hz with a binary code based on 6 bits (64 grey levels) .
  • the schematic below represents the increase of the number of sub-fields by using a line- repetition principle combined with the principle of EUTV coding: about 10 bits are available per L and R picture, each picture split in two groups of 5 sub-fields.
  • 160 grey-levels are available with a strong reduction of both large-area flickering and time-parallax artefact .
  • the goal of the following stereoscopic EUTV coding made with the bit-line-repeat (BLR) method will be to increase the number of SF while avoiding the line repetition. It means that most of the time the vertical resolution of the input signal will be kept by using a specific coding scheme.
  • each specific weight is a multiple of 7 which introduces an error of +/-2 (this error is limited to +/-1 if weights are multiples of 5.
  • Both left and right values have the same groups 1 and 2.
  • This code has to be split into two blocks with the sum of weights balanced and the same addressing time .
  • One solution could be:
  • the second proposal based on BLR introduces some artefacts in the picture even with the use of a pre- filtering.
  • the number of grey-levels is reduced as the maximal vertical resolution on the n common lines but the vertical resolution is higher as with simple "line repetition" .
  • k represents the number of common line (e.g. 6 in our example) and BLR count the number of transitions limited by the BLR restrictions. Afterwards, depending on the value of BLR count a decision between line repeat and bit-line-repeat can be taken.
  • Fig. 11 describes a possible circuit implementation of the present invention.
  • Input Right (R) and Left (L) pictures are forwarded to a degamma function block 1.
  • the output of this block 1 can be forwarded to an optional analysis unit 2 per- forming a picture analysis to define whether a BLR or a Pro- scan down-conversion (line-repeat mode) is preferable:
  • There is a MODE-flag which indicates which mode is preferable.
  • a plasma control unit 3 depending on the defined mode (2D or 3D activated, 50Hz or 60 Hz mode) , depending also on the op- tional flag MODE, selects the correct conversion algorithm 4 with a signal SEL and the correct sub-field encoding scheme 5 with a signal COD:
  • the plasma control block 3 takes the decision and allows synchronization between all blocks (e.g. proscan down- conversion with adapted sub-field organisation) .
  • This block 3 generates ' all the plasma control signals and, furthermore, it generates all needed synchronisation signals for the shutter eyeglasses 6.
  • the sub-field code words SF( R ) and SF( L) from the sub-field coding unit 5 are forwarded to a serial- parallel conversion unit 7, where driving data for the top and bottom drivers or single drivers of a plasma display panel 8 are generated.
  • the present invention improves the grey scale portrayal of a plasma display in case of stereoscopic displaying, the false contour behaviour in case of stereoscopic displaying, the panel response fidelity for faster addressing in case of stereoscopic displaying, the large area flickering behaviour in case of 50Hz stereoscopic displaying and the time parallax problem. If no BLR and no picture analysis are implemented, there is virtually no extra cost added (a proscan down-conversion is only a sub- sampling which has no relevant cost) . Only a slight adaptation of the plasma driving electronic should be necessary.
  • the present invention is applicable to each kind of display dedicated to stereoscopic displaying and using a similar way of grey level rendition method ("pulse width modulation") like DMD, LCOS, etc.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of Gas Discharge Display Tubes (AREA)

Abstract

Le nombre de sous-champs disponibles pour l'affichage stéréoscopique sur un panneau d'affichage à plasma n'est pas assez élevé pour assurer un bon rendu de l'échelle de gris et un bon comportement des faux contours. Par conséquent, dans la présente invention, on augmente artificiellement le nombre de sous-champs par un adressage commun des sous-champs de deux ou plusieurs lignes de pixels afin de réduire le temps d'adressage du panneau pour chaque sous-champ.
PCT/EP2002/001429 2001-02-22 2002-02-12 Ecran a plasma stereoscopique a entrelacement de champs WO2002069647A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/468,875 US20040070556A1 (en) 2001-02-22 2002-02-12 Stereoscopic plasma display and interleaving of fields

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP01104234A EP1231797A1 (fr) 2001-02-10 2001-02-22 Dispositif d'affichage à plasma d'images stéréoscopiques avec trames entrelacées
EP01104234.8 2001-02-22

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Publication Number Publication Date
WO2002069647A1 true WO2002069647A1 (fr) 2002-09-06

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TW (1) TW535125B (fr)
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Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0410551D0 (en) * 2004-05-12 2004-06-16 Ller Christian M 3d autostereoscopic display
EP2014101B1 (fr) * 2006-04-19 2016-02-24 Setred AS Amélioration de la largeur de bande pour un affichage 3d
US8749615B2 (en) * 2007-06-07 2014-06-10 Reald Inc. Demultiplexing for stereoplexed film and video applications
GB0716776D0 (en) * 2007-08-29 2007-10-10 Setred As Rendering improvement for 3D display
KR101546828B1 (ko) * 2008-06-10 2015-08-24 엘지전자 주식회사 디스플레이 장치
EP2291837B1 (fr) * 2008-06-11 2014-08-06 LG Electronics Inc. Dispositif d'affichage à plasma
WO2011074227A1 (fr) * 2009-12-14 2011-06-23 パナソニック株式会社 Procédé de pilotage de dispositif d'affichage à plasma, dispositif d'affichage à plasma et système d'affichage à plasma
US20120320015A1 (en) * 2010-03-09 2012-12-20 Yuya Shiozaki Plasma display device and plasma display system
US20120327053A1 (en) * 2010-03-10 2012-12-27 Yuya Shiozaki Plasma display device, plasma display system, drive method for plasma display panel, and control method for shutter glasses for plasma display device
JPWO2011111389A1 (ja) * 2010-03-10 2013-06-27 パナソニック株式会社 プラズマディスプレイ装置、プラズマディスプレイシステム、およびプラズマディスプレイ装置用シャッタ眼鏡の制御方法
CN102687189A (zh) * 2010-03-10 2012-09-19 松下电器产业株式会社 等离子显示装置、等离子显示系统及等离子显示面板的驱动方法
FR2958824A1 (fr) * 2010-04-09 2011-10-14 Thomson Licensing Procede de traitement d'images stereoscopiques et dispositif correspondant
KR101434312B1 (ko) 2010-06-21 2014-08-27 삼성전자주식회사 타이밍 컨트롤 유닛 및 이를 이용하는 디스플레이 장치 및 방법
JP5879902B2 (ja) * 2011-10-13 2016-03-08 セイコーエプソン株式会社 電気光学装置および電子機器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10322726A (ja) * 1997-05-15 1998-12-04 Sanyo Electric Co Ltd プラズマディスプレイパネルを用いた時分割メガネ方式の立体映像表示方法
JPH1195722A (ja) * 1997-09-17 1999-04-09 Sanyo Electric Co Ltd プラズマディスプレイパネルを用いた時分割メガネ方式の立体映像表示方法
JP2000036969A (ja) * 1998-07-21 2000-02-02 Nippon Hoso Kyokai <Nhk> 立体画像表示方法および装置
JP2000112428A (ja) * 1998-10-05 2000-04-21 Nippon Hoso Kyokai <Nhk> 立体画像表示方法および装置
EP1049068A1 (fr) * 1999-04-28 2000-11-02 THOMSON multimedia S.A. Procédé et dispositif pour traitement de signaux vidéo

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10322726A (ja) * 1997-05-15 1998-12-04 Sanyo Electric Co Ltd プラズマディスプレイパネルを用いた時分割メガネ方式の立体映像表示方法
JPH1195722A (ja) * 1997-09-17 1999-04-09 Sanyo Electric Co Ltd プラズマディスプレイパネルを用いた時分割メガネ方式の立体映像表示方法
JP2000036969A (ja) * 1998-07-21 2000-02-02 Nippon Hoso Kyokai <Nhk> 立体画像表示方法および装置
JP2000112428A (ja) * 1998-10-05 2000-04-21 Nippon Hoso Kyokai <Nhk> 立体画像表示方法および装置
EP1049068A1 (fr) * 1999-04-28 2000-11-02 THOMSON multimedia S.A. Procédé et dispositif pour traitement de signaux vidéo

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 03 31 March 1999 (1999-03-31) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 09 30 July 1999 (1999-07-30) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 05 14 September 2000 (2000-09-14) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 07 29 September 2000 (2000-09-29) *

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